Light Guide Member Positioning for Projector Light Source Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing light source apparatuses for projectors have low efficiency in utilizing excitation light due to the phosphor being disposed near one wall surface of the groove, resulting in incomplete light exposure and reduced fluorescence intensity.
Innovation Solution
A light source apparatus with a light guide member and position restriction members that ensure the phosphor is securely positioned within the groove, allowing excitation light to enter from multiple sides, enhancing light utilization efficiency and maintaining stable heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the phosphor is disposed in the vicinity of one wall surface of the groove, then the structure is simple, but the efficiency of utilization of excitation light is low
Solution Approach 1:
The phosphor is positioned not only along the longitudinal direction but also offset in the lateral direction, creating a three-dimensional arrangement where the phosphor is located at one end of the groove while being laterally offset from the wall surface. This dimensional change allows excitation light to enter the phosphor from multiple directions (top surface and side surfaces), significantly improving light utilization efficiency while maintaining structural simplicity.
2Ease of manufacture
If the phosphor is disposed in the vicinity of one wall surface of the groove, then the manufacturing is easy, but the fluorescence intensity is insufficient
Solution Approach 1:
By positioning the phosphor with a lateral offset from the wall surface rather than against it, the design enables excitation light to reach the phosphor through both the top surface and side surfaces. This dimensional arrangement increases the effective area for light excitation, thereby enhancing fluorescence intensity while keeping the manufacturing process simple and straightforward.
3Ease of operation
If the light guide member is freely positioned in the groove, then the assembly is easy, but the light utilization efficiency is low and heat dissipation is unstable
Solution Approach 1:
Positioning structures are provided in advance within the groove to guide and restrict the light guide member to a specific optimal position. These pre-configured positioning features ensure that during assembly, the light guide member automatically aligns correctly to maximize its exposure to excitation light from multiple directions while maintaining stable thermal contact with the heat dissipation structure, thereby improving light utilization efficiency and heat dissipation stability.
4Device complexity
If the light guide member is freely positioned in the groove, then the device complexity is low, but the heat dissipation stability is poor
Solution Approach 1:
Positioning structures are pre-integrated into the groove design to automatically align the light guide member with the heat dissipation structure during assembly. This preliminary positioning arrangement ensures stable thermal contact without requiring complex additional components, thereby maintaining device simplicity while significantly improving heat dissipation stability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution increases the efficiency of excitation light utilization, ensuring the generation of desired intensity fluorescence and maintaining optimal wavelength conversion efficiency by preventing light deviation and ensuring proper heat transfer.
Implementation Method 1
a light guide member that guides the light outputted from the light emitter
Implementation Method 2
a rod-shaped phosphor that converts the excitation light into fluorescence
Implementation Method 3
a heat conduction member that dissipates heat generated in the phosphor
Data Source
AI summary
A light source apparatus according to an aspect of the present disclosure includes a light emitter, a light guide member, a support member having a groove, and a position restriction member. The light guide member has a first surface and a second surface located at sides opposite from each other in a first direction, a third surface and a fourth surface located at sides opposite from each other in a second direction, and a fifth surface and a sixth surface located at sides opposite from each other in a third direction. The groove has a support surface facing the fourth surface, a first wall surface facing the fifth surface and separate from the fifth surface, and a second wall surface facing the sixth surface and separate from the sixth surface. The position restriction member includes a first placement section and a second placement section.